Invention Grant
- Patent Title: Production of cyclic imides suitable for oxidation catalysis
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Application No.: US16096091Application Date: 2017-04-18
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Publication No.: US11161812B2Publication Date: 2021-11-02
- Inventor: Jörg F. W. Weber , Helge Jaensch , Andrew R. Witt , Christopher L. Becker , Kirk C. Nadler , Kendele S. Galvan , Amy B. Batton
- Applicant: ExxonMobil Chemical Patents Inc.
- Applicant Address: US TX Baytown
- Assignee: ExxonMobil Chemical Patents Inc.
- Current Assignee: ExxonMobil Chemical Patents Inc.
- Current Assignee Address: US TX Baytown
- International Application: PCT/US2017/028027 WO 20170418
- International Announcement: WO2017/204935 WO 20171130
- Main IPC: B01J19/00
- IPC: B01J19/00 ; B01J19/18 ; C07D209/48 ; C07D307/89

Abstract:
Disclosed are novel processes for the production of cyclic imide compounds such as N-hydroxyphthalimide (NHPI). The processes may be particularly well-suited for commercial-scale production of cyclic imides such as NHPI. Such cyclic imide compounds are suitable for use as oxidation catalysts, and specifically may be used to oxidize cyclohexylbenzene to cyclohexyl-1-phenyl-1-hydroperoxide. Such an oxidation may be particularly useful in a process for the production of phenol and/or cyclohexanone from benzene via a process comprising hydroalkylation of benzene to cyclohexylbenzene, oxidation of the cyclohexylbenzene to cyclohexyl-1-phenyl-1-hydroperoxide, and cleavage of the cyclohexyl-1-phenyl-1-hydroperoxide to phenol and cyclohexanone. The cyclic imide production process may advantageously include water washing and reactant recovery steps to maximize purity and yield.
Public/Granted literature
- US20190135749A1 Production of Cyclic Imides Suitable for Oxidation Catalysis Public/Granted day:2019-05-09
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